PALEONTOLOGY, PETROLOGY, AND MINERALOGY. 1895. 73 
462 Taylor (Frank B.). Changes of level in the region of the Great 
Lakes in recent geological time. [Letter to J. I). Dana.] 
Am. Jour. Sci., 3d ser., vol. xlix, pp. 69-71. 
Reviews the evidences of the height reached by the highest old shore 
line of Lake Superior, the extent of glacial time as shown by the Niag- 
ara cataract, and the nature of the changes that have been produced by 
alternations in the altitude of the region. 
463 Niagara and the Great Lakes. 
Am. Jour. Sci., 3d ser., vol. xlix, pp. 249-270. 
Describes the extent of the Chippewa beach in the Lake Superior 
and Michigan-Huron basin, the beaches of the Gulf of Winnipeg, the 
extent of the Hudson-Champlain strait, and the extent of the first Lake 
Algonquin. Reviews descriptions of the Niagara gorge, describes the 
succession of the lake stages, and gives a chronologic conspectus of the 
post-Glacial history of the Great Lakes. 
464 The Munuscong Islands [Michigan]. 
Am. Geol., vol. xv, pp. 24-33. 
Presents a map showing the location of the ancient Munuscong Islands 
to the north of Mackinac Strait. Describes the character of the surface 
formations and beaches, and in a table compares the heights of the 
principal shore lines within the area of the map. 
465 The second Lake Algonquin. 
Am. Geol., vol. xv, pp. 100-120 and 162-179. 
Describes the southern extension of the Nipissing beach along the 
Michigan and Huron shores and discusses the causes of the change of 
outlet and the deformation of the Nipissing plane. Presents a map 
showing the extent of Lake Algonquin and the subsequent deformation 
of the Nipissing plane. Describes the order of the changes aud reviews 
Dr. Spencer's paper on the duration of Niagara gorge. Discusses the 
evidences of recent elevation and tilting in contiguous regions. 
466 The Nipissing beach on the north Superior shore. 
Am. Geol., vol. xv, pp. 304-314. 
Describes the general character of the Nipissing beach and its form 
and extent at certain localities on the north shore of Lake Superior. 
This paper is based on observations published by A. C. Lawson in a 
paper entitled u Sketch of the coastal topography of the north side of 
Lake Superior with sx>ecial reference to the abandoned strands of Lake 
Warren." Gives the author's summary and conclusions. 
467 [On the use of the term "Erigan".] 
Am. Geol., vol. xv, pp. 394-395 (correspondence). 
Refers to the author's use of the term "Erigan" to denote a section of 
the Niagara gorge and proposes to substitute the name "Little Niagara" 
throughout for "Erigan." 
468 Thomas (Benjamin W.), Woodward (Anthony) and. The micro- 
scopical fauna of the Cretaceous in Minnesota, with addi- 
tions from Nebraska and Illinois. (Foraminifera, Badiolaria, 
Coccoliths, Rhabdoliths.) 
Minn. Geol. and Nat. Hist. Surv., Final Rept., vol. iii, pt. i, pp. 23-54, pis. 
C, D ; and E. 
See Woodward (A.) and Thomas (B. W.), No. 567. 
